14. 7+3=10 and 7-3=4 so 7x2=14
4x2=8 8+-12=-4 gt=-4 they are equal. Is that what you mean?
Answer:
40+5q
Step-by-step explanation:
Distributive property is multiplying each number inside the parentheses by the number outside the parentheses.
For example: a(b+c) would be ab+ac
Knowing that all you have to do now is multiply:
5x8=40
5xq=5q
Put them together and you get 40+5q!
I hope this helps, and have a great day! :)
Answer:
7a^2-ab-9b^2
Step-by-step explanation:
Let's do this in two steps. First, we multiply the first two parentheses:
(a+2b)(4a-5b)
4a^2-5ab+8ab-10b^2 = 4a^2+3ab-10b^2
Then, do the other two parentheses:
(3a-b)(b-a)
3ab-3a^2-b^2+ab = 4ab-3a^2-b^2
Then, combine them:
4a^2+3ab-10b^2-4ab+3a^2+b^2 = 7a^2-ab-9b^2
